# Unity scripting symbol reference > A reference of the predefined scripting symbols Unity provides. ## Platform symbols Unity automatically defines certain symbols based on the authoring and build target platform. These are as follows: | **Define** | **Function** | | ------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `UNITY_EDITOR` | Scripting symbol to call Unity Editor scripts from your game code. | | `UNITY_EDITOR_WIN` | Scripting symbol for Editor code on Windows. | | `UNITY_EDITOR_OSX` | Scripting symbol for Editor code in macOS. | | `UNITY_EDITOR_LINUX` | Scripting symbol for Editor code on Linux. | | `UNITY_EMBEDDED_LINUX` | Scripting symbol for embedded Linux. | | `UNITY_QNX` | Scripting symbol for QNX. | | `UNITY_STANDALONE_OSX` | Scripting symbol to compile or execute code specifically for macOS (including Universal, PPC and Intel architectures). | | `UNITY_STANDALONE_WIN` | Scripting symbol for compiling/executing code specifically for Windows standalone applications. | | `UNITY_STANDALONE_LINUX` | Scripting symbol for compiling/executing code specifically for Linux standalone applications. | | `UNITY_STANDALONE` | Scripting symbol for compiling/executing code for any standalone platform (Mac OS X, Windows or Linux). | | `UNITY_SERVER` | Scripting symbol for compiling/executing code for a [dedicated server](/engine/7000.0/manual/platform-specific/dedicated-server.md) (macOS, Windows or Linux). | | `UNITY_IOS` | Scripting symbol for compiling/executing code for the iOS platform. | | `UNITY_ANDROID` | Scripting symbol for the Android platform. | | `UNITY_TVOS` | Scripting symbol for the Apple TV platform. | | `UNITY_VISIONOS` | Scripting symbol for the VisionOS platform. | | `UNITY_WSA` | Scripting symbol for Universal Windows Platform. | | `UNITY_WSA_10_0` | Scripting symbol for Universal Windows Platform. | | `UNITY_WEBGL` | Scripting symbol for Web. | | `UNITY_ANALYTICS` | Scripting symbol for calling Unity Analytics methods from your game code. | | `UNITY_ASSERTIONS` | Scripting symbol for assertions control process. `UNITY_ASSERTIONS` is always defined for Editor code and defined for builds with Debug and Checked managed code variants. | | `UNITY_ENABLE_CHECKS` | Scripting symbol for enabling safety checks. `UNITY_ENABLE_CHECKS` is always defined for Editor code and defined for builds with Debug and Checked managed code variants. | | `UNITY_INCLUDE_INSTRUMENTATION` | Scripting symbol for enabling instrumentation code paths, such as the profiler. `UNITY_INCLUDE_INSTRUMENTATION` is always defined for Editor code and defined for builds with Debug, Checked, and Instrumented managed code variants. | ## Unity Editor version symbols Unity automatically defines certain scripting symbols based on the version of the Unity Editor that you're currently using. Given a version number `X.Y.Z` (for example, 6000.0.33), Unity exposes three global scripting symbols in the following formats: `UNITY_X`, `UNITY_X_Y` and `UNITY_X_Y_Z`. Here is an example of scripting symbols exposed in Unity 6000.0.33: | **Define** | **Function** | | ----------------- | --------------------------------------------------------------------------------------- | | `UNITY_6000` | Scripting symbol for the release version of Unity 6, exposed in every 6000.Y.Z release. | | `UNITY_6000_0` | Scripting symbol for the major version of Unity 6.0, exposed in every 6000.0.Z release. | | `UNITY_6000_0_33` | Scripting symbol for the minor version of Unity 6000.0.33. | You can also compile code selectively based on the earliest version of Unity required to compile or execute a section of code snippet. Following the same version format describd previously (`X.Y`), Unity exposes one global `#define` in the format `UNITY_X_Y_OR_NEWER` (for example, `UNITY_6000_0_OR_NEWER`), that you can use for this purpose. ## Other symbols The other symbols Unity defines are: | **Define** | **Function** | | ----------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `CSHARP_7_3_OR_NEWER` | Defined when building scripts with support for C# 7.3 or newer. | | `ENABLE_IL2CPP` | Scripting back end #define for IL2CPP. | | `ENABLE_VR` | Defined when the target build platform supports VR. Doesn't imply that VR is currently enabled or that the necessary plug-ins and packages needed to support VR are installed. | | `NET_2_0` | Defined when building scripts against .NET 2.0 API compatibility level on Mono and IL2CPP. | | `NET_2_0_SUBSET` | Defined when building scripts against .NET 2.0 Subset API compatibility level on Mono and IL2CPP. | | `NET_LEGACY` | Defined when building scripts against .NET 2.0 or .NET 2.0 Subset API compatibility level on Mono and IL2CPP. | | `NET_4_6` | Defined when building scripts against .NET 4.x API compatibility level on Mono and IL2CPP. | | `NET_STANDARD_2_0` | Defined when building scripts against .NET Standard 2.0 API compatibility level on Mono and IL2CPP. | | `NET_STANDARD_2_1` | Defined when building scripts against .NET Standard 2.1 API compatibility level on Mono and IL2CPP. | | `NET_STANDARD` | Defined when building scripts against .NET Standard 2.1 API compatibility level on Mono and IL2CPP. | | `NETSTANDARD2_1` | Defined when building scripts against .NET Standard 2.1 API compatibility level on Mono and IL2CPP. | | `NETSTANDARD` | Defined when building scripts against .NET Standard 2.1 API compatibility level on Mono and IL2CPP. | | `ENABLE_WINMD_SUPPORT` | Defined when Windows Runtime support is enabled on IL2CPP. For more information, refer to [WinRT API in C# scripts for UWP](/engine/7000.0/manual/platform-specific/windows-store/uwp-developing/windowsstore-scripts.md). | | `ENABLE_INPUT_SYSTEM` | Defined when the Input System package is enabled in Player Settings. | | `ENABLE_LEGACY_INPUT_MANAGER` | Defined when the legacy Input Manager is enabled in Player Settings. | | `UNITY_CLOUD_BUILD` | Defined when the project is built with [Unity Build Automation](https://docs.unity.com/ugs/en-us/manual/devops/manual/unity-build-automation.md). | > **Note:** > > The `DEBUG` symbol is predefined in C#. Unity defines it for Editor code and for builds that use the Debug [managed code variant](/engine/7000.0/manual/building-and-publishing/managed-code-variants.md) or have **Script Debugging** enabled. ## Additional resources * [Test your conditionally compiled code](/engine/7000.0/manual/programming-environment/script-compilation/conditional-compilation/test.md) * [Custom scripting symbols](/engine/7000.0/manual/programming-environment/script-compilation/conditional-compilation/custom-scripting-symbols.md)